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English definition of “vertex”

vertex

noun [C]     /ˈvɜː.teks/ US  /ˈvɝː.t̬eks/ (plural vertices or vertexes) specialized
(in mathematics) the point where two lines meet to form an angle, or the point that is opposite the base of a shape: the vertex of a triangle/cone/pyramidParts of geometrical shapes the highest point of somethingEdges and extremities of objectsSurfaces of objectsHigher and lower points of achievementSuccess and achievementsFailures
(Definition of vertex noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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